Mold and mold-hoisting apparatus for building concrete walls



(No Model.

1 T. w. OARRIGO,

MOLD AND MOLD HOISTING APPARATUS FOR BUILDING GONORE'I'EWALLS. No. 310,377. Patented Jan. 6, 1885.

72. t T WITNESSES I VENTOR J'Wamno I v layg ATTORNEYS UNITED STATES PATENT OFFICE.

THOMAS XV. OARRICO, OF SAN ANTONIO, TEXAS.

MOLD AND MOLD-HOIS TING APPARATUS FOR BUlLDING CONCRETE WALLS.

SPECIFICATION forming part of Letters Patent No. 310,377, dated January 6, 1885.

Application filed August 18, 1884. (No model.)

To LZZ whom it may concern.-

Be it known that I, Tnorms W. Onanroo, of San Antonio, in the county of Bexar and State of Texas, have invented a new and Improved Mold and Mold-Hoisting Apparatus for Building Concrete alls, of which the following is a full, clean-and exact description.

My present invention consists in certain improvements on the apparatus shown in Letters Patent granted to me July 8, 1884, N 0. 301,671, and has the object to facilitate the hoisting of the molds as the courses of the wall are successively finished and the proper formation and plumbing angles, as hereinafter specified.

Reference is to bchad to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in both the figures.

Figure 1 is a perspective view showing the apparatus as applied in the construction of a wall, and Fig. 2 is a partial plan view of the mold.

A A are the planks forming the mold, tied together by the cross-bolts O, and connected at the corners by angle-pieces, as hereinafter described.

B are frames erected at suitable points in the length of the wall. a a are brackets attached to planks A, and sustaining a crossshaft, b, that carries a drum, 0.

(Z is a rope from the drum, passing through a block, 6, that is suspended from frame B by a strap, f, and the end of the rope connects to a clevis on a bar, attached to the planks A. The shaft 1) is provlded with a crank-handle, h, and adjustable collars t,which prevent endwise movement of the shaft and allow adjustment to any width of mold. On the shaft is a ratchet-wheel, 7r, engaged by a pawl, Z, hung on the mold. This windlass is used to hoist the mold from a finished course into position for a new course, and facilitates that work.

For splicing a plank to form a mold of suitable length, they are made with rabbeted and beveled ends, as shown at m in Fig. 2, and latches a are hung on screw-pivots at the outside, so that they can be turned to clamp and hold the ends of the plank together. At the corners the plank ends are fitted at the inside with strips 0, bent at the required angle, and to these strips 0 bars 1) are attached by bolts q, so as to form shoulders for the ends of the plank to abut against. Plates 1', attached on the bars 1) by the bolts q, have clamping-screws s in their ends projecting over the planks, so as to clamp the latter to the angle-pieces. The angle-pieces 0 and bars 1) are in length about three times the width of the plank, so that in the construction of the wall the corner-pieces remain in place while the planks are moved upon them until three courses are completed, when the strips 0 with bars 1) are raised and the planks clamped in the lower position. This insures a proper formation and the plumbing of the angles of the walls.

The mold formed and connected as described is firm and substantial.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1 The combination of shaft 1), drum a, rope d, and bar 9 with the mold formed of plank A, and with frame B, substantially as described.

2. The planks A of the mold, made with rabbeted ends m, and provided with clamps a, substantially as and for the purpose specified.

3. The combination of angle-pieces 0, bars 1), and clamping-screws s with the mold-planks A, substantially as described.

4. The combination, with the planks of a concrete-mold having beveled ends, of anglepieces, also having beveled ends, and provided with screws for clamping the plank, substantially as described.

THOMAS XV. CARR-I00. lVitnesses:

Ovrn B. WALLACE, Jenn J. STEVENS. 

